Search found 984 matches

by monzaz
Thu Jul 23, 2009 11:04 am
Forum: 10 Bolt Differential Questions
Topic: '65 GS Posi Upgrade
Replies: 17
Views: 32068

Re: '65 GS Posi Upgrade

let me know PM or call 330 659 7117
by monzaz
Thu Jul 23, 2009 11:03 am
Forum: Parts Wanted
Topic: USED POSITRACTION UNITS IN NEED OF REPAIR OR UNWANTED
Replies: 9
Views: 20920

Re: USED POSITRACTION UNITS IN NEED OF REPAIR OR UNWANTED

get me the spring perch width and the overall width. Also it might just be easier to rebuild yours since it fits...lol. Jim You really need to know the power of your vehicle. to get the best gas mileage you should stick with the 3.42 gear. My conversion van has 3.42 and tow my race car and trailor g...
by monzaz
Tue Jul 21, 2009 9:22 am
Forum: General Differential Questions
Topic: Buick posi I.D.
Replies: 11
Views: 21664

Re: Buick posi I.D.

Yes a spacer may work with the rear...BUT we need to make a spacer as I do not know if one exsists. I think if you can get your hands on a pontiac old 57-64 drop out ring gear spacer the metal ring may fit and may only need a redrill over sized of the bolt holes IF they are not big enough. Longer le...
by monzaz
Fri Jul 17, 2009 9:23 pm
Forum: 10 Bolt Differential Questions
Topic: '65 GS Posi Upgrade
Replies: 17
Views: 32068

Re: '65 GS Posi Upgrade

Oh and do not assume they axle shaft press on diameter is also larger as they make MANY differet sealed bearings ...1.382 is the standard for most pontiac buick and olds 8.2 rears. So hang tight keep measuring and I will call.
by monzaz
Fri Jul 17, 2009 9:19 pm
Forum: 10 Bolt Differential Questions
Topic: '65 GS Posi Upgrade
Replies: 17
Views: 32068

Re: '65 GS Posi Upgrade

The seal metal all needs to come out. Just hit it on one side crushing it them pick it out. The metal is quite thin and will distort easy. You will need to replace them any way. 8594s seal...fairly common. The 65 should have normal RW507CR bearings UNLESS you have a WAGON rear. I do not think GS had...
by monzaz
Fri Jul 10, 2009 10:49 pm
Forum: 12 Bolt Differential Questions
Topic: 66 Pontiac Grand Prix 12 bolt posi
Replies: 1
Views: 7727

Re: 66 Pontiac Grand Prix 12 bolt posi

Ok well we have trouble here at the moment... The full size Pontiacs are NOT supported by aftermarket gears at this time...I say at this time because There is a gentleman in Texas working on the gears as we write. Some of the full size pontiacs did come with 3.73 and 4.11...BUT they are extremely VE...
by monzaz
Fri Jul 10, 2009 10:41 pm
Forum: 10 Bolt Differential Questions
Topic: '65-'67 Olds rears
Replies: 26
Views: 36112

Re: '65-'67 Olds rears

I would say a very small amount were 4 pinion posi unit in 67 as the 12 bolt olds rear was introduced in that year in the USA cars for the w-30 etc. so I would say only the first half of the year and MAYBE canadian cars got them. Jim (That is a guess-ti-mation) I am assembling a T# 67 68 rear right ...
by monzaz
Fri Jul 10, 2009 10:36 pm
Forum: 10 Bolt Differential Questions
Topic: '65 GS Posi Upgrade
Replies: 17
Views: 32068

Re: '65 GS Posi Upgrade

Joe, Are you saying the bearings themselves are a different diameter? WAs this rear assebled when you received/bought it? They appear to be the same as they have sealed bearings on the axle shafts and that would be correct for the early housing you have. One bearing looks to have been replaced and t...
by monzaz
Mon Jul 06, 2009 5:38 pm
Forum: General Discussion
Topic: Hello From South Florida!
Replies: 2
Views: 13692

Re: Hello From South Florida!

Welcome JOE, I do remember this as you explained... This is the exact reason for the site. SOOOooo shot away with the questions. I will do my best to keep up with your questions as fast as possible. The first and most important thing about the diff work IS PATIENTS!!! Over all to not assume...please...
by monzaz
Sat Jul 04, 2009 8:13 pm
Forum: 10 Bolt Differential Questions
Topic: Oldsmobile 1971 10-Bolt Rear Axle
Replies: 4
Views: 10669

Re: Oldsmobile 1971 10-Bolt Rear Axle

Back from Vacation... Jim
by monzaz
Sun Jun 21, 2009 2:25 pm
Forum: 10 Bolt Differential Questions
Topic: Oldsmobile 1971 10-Bolt Rear Axle
Replies: 4
Views: 10669

Re: Oldsmobile 1971 10-Bolt Rear Axle

PLease post some pictures of the rear end ...center section front and back spring perch mount area etc. This is the only way we are going to get your problem solved...IF it truely has c-clip axles it is chevy... in 1970 cmaros were the first to use the c-clip 8.5 rears 1971 1972 buick and olds used ...
by monzaz
Sun Jun 21, 2009 2:20 pm
Forum: 12 Bolt Differential Questions
Topic: Help with casting number 393820
Replies: 3
Views: 10950

Re: Help with casting number 393820

OLDSMOBILE 12 bolt 'O' type. Not chevy 12 bolt. Going to be pretty expensive for parts and is basically a 10 bolt rear...A bigger 10 bolt rear but still 10 bolt. Jim As for staying with it or the ten bolt??? The 10 bolt will be cheaper to build and if you are just street bound will more than do the ...
by monzaz
Fri Jun 19, 2009 12:52 pm
Forum: Rear Ends and Parts
Topic: 4.56 10 bolt 7.5 monzaz gears NEW
Replies: 0
Views: 20701

4.56 10 bolt 7.5 monzaz gears NEW

We have a great set of MONZA / Vega 7.5 4.56 ratio gears NEW

Machined and ready for install. Comes with the stronger conversion yoke.

199.00 gets it all!
by monzaz
Fri Jun 19, 2009 12:47 pm
Forum: Parts Wanted
Topic: Need rear end for 84 gmc g2500 van
Replies: 3
Views: 12350

Re: Need rear end for 84 gmc g2500 van

We need to know the size of the diff. 14 bolt 9.5 ich ring or 10.5 full floater... We need to know this so you have a good bolt in rear. PLUS the gear ratio will be needed. Jim
by monzaz
Fri Jun 19, 2009 12:45 pm
Forum: 12 Bolt Differential Questions
Topic: Help with casting number 393820
Replies: 3
Views: 10950

Re: Help with casting number 393820

Pictures will be MOST helpful. From your descriptive parts and numbers I am going to say you have a OLDS 12 bolt rear and is NOT a try 12 bolt rear and will require gobs of money to rebuild. The carrier ring gear bolt count is 10 bolt not 12 bolt as a chevy 12 bolt which actually matches the cover b...